Bro I understand your frustration at teammates having bad games but...everyone has bad games.
Just because you performed better than your teammates in one game doesn't give you the right to flame them, just like your teammates don't have the right to flame you if you have a bad game (if they did then that's punishable), and just like higher-ranked players don't have the right to flame lower-ranked players.
Everyone gets mad at underperforming teammates (me too), and we all have those outbursts once in a while (or at least, I do). But I honestly feel like in-game performance cannot justify flaming in any way.